no-useless-escape issue in regexp strings

[erosman]

The backslashes in the following example show as error in ESLint with "no-useless-escape".
Can the following error be avoided?

const code = 
`(() => {
  const regex = /\/\d+/g;
  if (regex.test(window.location.href)) {
    // do something
  }
})();`;

browser.tabs.executeScript({code});

[fasttime]

Thanks for the clarifications. Backslashes in template literals are considered escape characters, so the rule is correct in reporting them. They should be preceded by another backslash in order to result as a single backslash in the value that is assigned to code:

const code = 
`(() => {
  const regex = /\\/\\d+/g;
  if (regex.test(window.location.href)) {
    // do something
  }
})();`;

Another option is using String.raw to get the unescaped text inside the backticks:

const code = 
String.raw`(() => {
  const regex = /\/\d+/g;
  if (regex.test(window.location.href)) {
    // do something
  }
})();`;

[erosman]

Thank you for the help and the explanation.